Re: One Two Many
"seconde or deuxième (prefered usage when enumerating)"
Not quite. The rule is: You use "deuxième" when referring to the second of <many>. You use "second(e)" when referring to the second of two.
As we are talking about a language, there are of course exceptions: classe de seconde, seconde nature, and of course the Seconde Guerre Mondial will probably remain that even if there's a third attempt. I say probably because this time we have nukes and countries run by lunatics, but asides from that...